Multiple-needle weft detector for looms



Nov..29,'.1927. 1,651,124

E. R. HOLMES IULTIPLE NEEDLE WEFT DETECTOR FOR LOOMS 'F'iled June 9 1926 56 54 [III Mi lmwz or [/Ar/g ye 11. [26/0786 Patented Nov. 29, 1927, V I

UNITED s'rnrrss KNOWLES LOOM worms, 'MAssAoirUsnr'rs.

T T OFFI'CE- ELBR-IIDGE n. HOLMES, or woncnsrnn; MASSACHUSETTS, Ass erton 'ro cnomrrona or wononsrnn, MASSACHUSETTS, A CORPORATION OF T'vIULTIPLE-NEEDLE WEFTV DETECTOR FOR LOOMS.

Application filed June a,

This invention relates to improvements in multiple needleweft detectors for looms and it is the principal object of the invention to simplify and eheapen the construction of this type of detector by making certain portions of pressed metal and by dispensing with the necessity for close fitting such as has prevailed heretofore in mechanisms of this type.

In weft detectors of the type specified it hasbeen the usual custom to provide a dctecting element having two parallel arms one of which is longer than the other and engages the bobbin while the shorter arm serves as a controller for an actuating lever. These detecting elements have been slidably'n'iountin a frame and it has been a n'iatter of practical difiiculty to have the arms the same distance apart in all of the elements, a condition which is necessary in order to permit the free movement necessary to render the detector sensitive and delicate in its operation. It is afurther object of my inventi n to avoid the close fitting by using a detector having a single arm provided at its fen ward end with a short hook whichcooperates with supporting means, the needles being guided in a frame preferably of pressed metal. 7

In Patent No. 1,583,135 issued to Flanigan andAshton there are shown a plurality of individual weights, one for each detector and 7 it is a further objectof my invention to use this construction by pivotally connecting each of the needle detectors to its correspondingweight, thus simplifying the con- .struction and insuring that each d etectorwill be at all times operatively connected to weight The actuator previously mentioned has heretofore cooperated with the shorter arm of the indicating needle but this practice has resulted in occasional bending of the controller ends ofthe needles so that the same do not move freely in their guides and it is a still further-object of my invention to over-.

come this objection by forming each weight with a controller portion which will act to interrupt the downward movement of the actuator lever. By thisconstructionit is possible to make use of a controller the width of which is substantially equal to the distance between adyacent detector needles andsaid portion can be'made much stronger 1926. Serial No. 114,813.

than the needle and will thereforebe more satisfactory and subject to less deformation.

lVith these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangementof parts hereinafter described and .set forth. in the claims.

In the accompanying drawings wherein 1 have shown a convenient en'ibodiment of my invention, I I

,Fig. 1 is a side elevation of my improved detector, portions thereof, together with the cooperating shuttle and bobbin, being indicated in section,

Fig. 2 is a top plan view of the detector taken in thedirection of arrow 2, Fig. 1, the guide for the actuator lever being shown in section,

Fig. 8 taken in the direction of arrow 3, Fig. 1,

4 is a detail side elevation of one of the weights and the adjacent portion of the corresponding needle detector, partsbeing 1n section to indicate the connection between' the two parts, and

Fig.5 is an enlarged horizontal section on line 5'5 of Fig. 4, looking in the direction of the arrows.

Referring particularly to the drawings it Wlll be seen that I have provided a stand 10 having bolted thereto a supportll on which is mounted a carrier 12. Said carrier is preferably formed of a piece of sheet metal is ,a rear elevation of the detector 1 and has'a rearwardly extending arm 13 up turned as at 11 to guide the rezn'waij-dly extending portions of the needle detectors 15, the latter passing through perforations 16.

The carrier is also formed'wit-h a second for- :wardly extending arm 17 hooked asat 18 to receive the forward end of the tension spring 19. The latter extends through an upright offset connecting portion 20 of the carrier be I tween the arms 13 and 17 and. also extends throughthe support 11 and is heldto the rear end thereof by a pin 21. By the conor other obstruction. v p

The carrier is provided with 'a pair of spaced upstanding wings 22 between the upper ends of which extends a pin 23. WVeights 2 1 are loosely pivoted 0n pin 23 and a bobbin provided with a plurality of holes which are uncovered at substantial exhaustion of weft, a support, a plurality of individually movable weights mounted for pivotal motion on the support, and a plurality of needle detectors one for each weight, the support being provided with guide openings to receive the rear ends of the detectors, said detectors being supported in part directly by the support and in part by the weights.

5. A loom weft detector to cooperate with a bobbin provided with a plurality of holes which are uncovered at substantial exhaustion of weft, a plurality of weights, a support for said weights on which the latter are movably mounted, and a plurality of needle detectors one for each weight, each detector being supported in part by the associated weight, said weights acting by gravity to move the detectors to normal position.

6. A loom weft detector to cooperate with a bobbin provided with a plurality of holes which are uncovered at substantial exhaustion of weft, a support, a plurality of weights movably mounted on the support, a plurality of needle detectors one for each weight, means defining a positive connection between each weight and the associated detector, and means acting on the weights at the time of transfer to withdraw the detectors from the path of the incoming bobbin. 7. A loom weft detector to cooperate with a bobbin provided with a plurality of holes which are uncovered at substantial exhaustion of weft, a plurality of needle detectors,

a sheet metal carrier therefor having a por- 'tion thereof bent vertically and perforated to receive and guide and support the detectors, said carrier having formed integrally therewith lateral upstanding wings, apivot pin extending between the wings, and a pluralityof 'weightsmovably mounted on the pin, one weight for each detector,

the weights extending between and being restrained wings.

8. A weight for a multiple needle weft detector operating with a plurality of needle detectors and an actuator lever, said weight having provision for pivotal connection with a needle detector, and having also a projectionto lie normally under the actuator.

9. A combined weight and detector element for a multiple needle Weft detector operatingwith a plurality of needle detectors, said weight and detector element being pivotally connected to each other.

against lateral movement by the In testimony whereof I have hereunto affixed my signature.

ELBRIDGE R' HOLMES. 

